Masking the Window for Caulking

so it's an awesome product if you want to paint over your caulking immediately but there's kind of a gap in this window that the drywallers didn't fill we want that to look crisp and clean so we're going to mask mask it with frog tape and right before i spray it i'm gonna it spray it and pull the masking while it's still wet but i ran just frog tape around the edges so i don't get any bleeding on my bronze window now i'm just gonna drop plastic over it